Internal-combustion engine.



C. W. WEISS. INTERNAL GOMBUSTION ENGINE. APPLICATION FILED MAY 12, 190s.

Patented Jan. 5, 1909.

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CARL W. WEISS, OF NEW YORK, Y.,

ASSIGNOR OF ONE-HALF TO AUGUST MIETZ, OF NEW YORK, N. Y.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Ian. 5, 1909.

Application filed May 12, 1908. Serial No. $32,384.

To all whom it may concern:

Be it known that I, CARL W. WEISS, a citizen of the United States,residing in the borough of Manhattan, in the city of New York, in theState of New York, have invented certain new and useful Improvements inInternal-Combustion Engines, of which the following is a specification,reference being had to the accompanying drawing, forming a part hereof.

This invention relates to the introduction into the working cylinder orexplosion chamber of the air which, with the fuel, forms therein theexplosive mixture and in accordance with the invention the exhaust fromthe cylinder or. explosion chamber is made to act by induction oraspiration upon a body of fresh air so as .to place the same in positionto be drawn into the cylinder or explosion chamber through the exhaustopening as the pressure in the cylinder or chamber falls belowatmospheric after the expulsion of the dead gases. When the exhaust portis opened, either by being uncovered by thepiston in its movement or bybeing opened through suitable mechanism actuated from some moving partof the engine, the dead gases immediately escape w th a bi h temperatureand with such a high velocity that if the gases are directed through asuitable inductor or aspirator a:

flow of fresh air will be induced from a .the charge may be introducedin any convenient and suitable manner, either with the air orindependently thereof. Incidental to the introduction ofthe 'air in thismanner, the number of'nece'ssary ports inthe cylinder is reduced to oneand, furthermore, the noise of the exhaust is largely reduced.

,It will be obvious that the form of the devices'employed for theintroduction of the air in the manner described may be varied and thatsuch devices may also be connected difierently to the cylinder orchamber, all as may be rendered desirable by the particular conditionsof use.

In the accompanying drawing there are.

shown, for purposes of illustration and explanation of the nature of theinvention, several embodiments of the invention which are found tooperate satisfactorily in actual use.

.In the drawing-Figure 1 is a view, partly in elevation and partly inlongitudinal central section, of an internal combustion engine of a wellknown type to which one form the exhaust port and the port for theintroduction of the air and is uncovered by the piston c as the latterapproaches the limit of its forward stroke. The piston 0 may beconnected as usual to .the crank shaft d. A fuel inlet, which may be ofany usual or suitable character, is shown at e as located near the headof the cylinder, and thereis also shown an igniter f, which likewise maybe of any usual or suitable character. Connected with the exhaust port 6is an inductor or aspirator g which preferably comprises an expandingnozzle h, whereby the pressure of the escaping gases is converted intovelocity, as is well understood, and with an air inlet port 73 which isproperly located with respect to the nozzle 71, so that the escape ofthe gases through-the nozzle h produces an aspiratmg efiect or induces aflow of air inward through the air port 41 into the extension is of theaspirator or inductor.

It will be understood that, in the operaases cause an inflow of airthrough the air inlet 2' so that the extension is of the inductor ispractically filled with pure air as soon as the escaping gases losetheir great velocity. The expansion of the gases when released sion inis sucked into the cylinder before, the

port 6 is closed by the rearward movement of the piston. The air whichis thus sucked into the cylinder mingles with the fuel element of thecharge to form an explosive mixture in the usual manner and the freshcharge thus formed in the cylinder is compressed by the backwardmovement of the piston in the usual manner.

In Fig. 2 of the drawing the aspirator or inductor 9, provided as beforewith a nozzle h, an air inlet 71 and an extension 70', is slightlydifferent in form from that shown in Fig. 1 so as to provide for adischarge of the gases in a different direction, and in thisconstruction the inlet 2' for the fuel element is shown as located inthe nozzle it, so that the fuel element is carried into the cylinderwith the air.

In the construction shown in Fig. 3, the inductor or aspirator g issubstantially the same in form and details of construction as that shownin Fig. 2, but the exhaust port 22 in this instance,is shown as locatednear the head end of the cylinder and as controlled by a valve Z whichis actuated, to open the port, at the proper time from some convenientmoving part of the engine, as

particular constructions shown and described herein or any of them. I

I claim as my invention:

1. An internal combustion engine having an air inductor applied to theexhaust port, whereby the escaping exhaust gases induce the flow of abody of air which is drawn into the cylinder or chamber through theexhaust port as the pressure therein falls.

2. In an internal combustion engine, the combination with a cylinder orchamber having an exhaust port, of an inductor or aspirator appliedtothe exhaust port and provided with an air inlet and an extension,whereby the escape of the exhaust gases induces a flow of air into theinductor or aspirator and the air is drawn into the cylinder or chamberthrough the exhaustport as the pressure therein falls.

This specification signed and witnessed this 4th day of May, A. D.,1908.

' CARL W. WEISS.

Signed in the presence of:

W. GREELEY, AMBROSE L. OSEEA.

